Sir Clive's financial problems in the mid-80s led him to sell the rights to the Sinclair brand to Amstrad in April 1986. This led to further models of the Spectrum being released from 1986 to 1988 and also anIBM PC-compatible based internally on Amstrad's own PCrange. Sir Clive was not involved with the production of these computers, and nocomputer with the Sinclair name has been produced since.